First of all, vermilion powder is a kind of ground vermilion, which is widely used in Four Treasures of the Study. Cinnabar powder is a kind of dye with strong dyeability and easy to be contaminated on other objects. If the vermilion powder blessing bag is put in a child's schoolbag, it may cause the books, clothes and other items in the schoolbag to be dyed.
Secondly, cinnabar powder itself belongs to granular substances. If it is not properly kept, it may cause vermilion powder to splash on other items in the schoolbag, and even enter the child's clothes, nose and mouth, which will have adverse effects on the child's health, such as skin allergy or respiratory discomfort.
Therefore, in order to ensure the health of children and the safety of goods, I suggest not to put cinnabar powder blessing bags in children's schoolbags. If children are interested or need it, we can discuss with them how to use and keep this stationery correctly.